Euxoa riversii - Hodges#10868
Euxoa riversii
This record describes Euxoa riversii (species). Recorded family: Noctuidae. Recorded order: Lepidoptera.
Identification and Appearance
This species is the southern counterpart of E. wilsoni and can be distinguished from that species by its paler coloration and genital characteristics. It has similar forms to wilsoni . Essentially, most riversii specimens look like bleached wilsoni . In general, riversii is larger and has narrower forewings than does wilsoni .
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Lepidoptera (Butterflies and Moths)
- Superfamily
- Noctuoidea
- Family
- Noctuidae (Owlet Moths)
- Subfamily
- Noctuinae
- Tribe
- Noctuini
- Genus
- Euxoa
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
Coastal southern California from Los Angeles County southward to San Diego; it also occurs on the Channel Islands as far north as San Miguel Island.
Seasonal Activity
Adults have been collected from early May to early August.
About Butterflies and Moths: the wider group
Order-level background for Lepidoptera, the group containing Euxoa riversii. Species-specific details appear above.
Group overview
Lepidoptera includes approximately 180,000 described species of butterflies and moths. Moths outnumber butterflies roughly 10:1. The monarch butterfly's eastern population has declined by more than 80% since the mid-1990s, and the western population by over 95% since the 1980s. The IUCN lists the migratory monarch as Vulnerable.
Ecological role of the group
Butterflies and moths are essential indicators of ecosystem health. As caterpillars, they are a primary food source for birds - a single nest of blue tit chicks requires ~10,000 caterpillars. Adult moths pollinate many night-blooming plants.
Economic and practical significance of the group
Lepidoptera are critical pollinators. In Europe, grassland butterfly species have declined by almost 50% since the early 1990s. In the UK, three-quarters of butterflies are in decline. In the U.S., five butterfly species have gone extinct since 1950, with 29 listed as endangered.
Recorded sources for this group: IUCN Red List, Xerces Society, USFWS, PNAS, WWF. Imported estimates may describe particular regions or reporting periods.
Frequently Asked Questions About Euxoa riversii - Hodges#10868
What is Euxoa riversii - Hodges#10868?
Euxoa riversii - Hodges#10868 (Euxoa riversii) is a species in the family Noctuidae, within the order Lepidoptera.
How big is Euxoa riversii - Hodges#10868?
Forewing length: 17-21 mm.
How do you identify Euxoa riversii - Hodges#10868?
This species is the southern counterpart of E. wilsoni and can be distinguished from that species by its paler coloration and genital characteristics. It has similar forms to wilsoni . Essentially, most riversii specimens look like bleached wilsoni . In general, riversii is larger and has narrower forewings than does wilsoni .
Where is Euxoa riversii - Hodges#10868 found?
Range: Coastal southern California from Los Angeles County southward to San Diego; it also occurs on the Channel Islands as far north as San Miguel Island.
When is Euxoa riversii - Hodges#10868 active?
Euxoa riversii - Hodges#10868: seasonal activity - Adults have been collected from early May to early August..